Table 4 CT findings among the study groups
Group | P value | |||||
|---|---|---|---|---|---|---|
Pyonephrosis (13 renal unit) | Hydronephrosis (38 renal unit) | |||||
Count | % | Count | % | |||
Degree of dilatation of the PCs | Mild | 0 | 0.0 | 0 | 0.0 | 0.047 |
Moderate | 9 | 69.2 | 14 | 36.9 | ||
Severe | 4 | 30.8 | 24 | 63.1 | ||
Pelvic wall thickness > 2 mm | Yes | 10 | 76.9 | 3 | 7.9 | 0.0001 |
No | 3 | 23.1 | 35 | 92.1 | ||
Parenchymal\perinephric Inflammatory changes | Yes | 6 | 46.2 | 8 | 21.1 | 0.084 |
No | 7 | 53.8 | 30 | 78.9 | ||
Possible causes of obstruction | Urinary stones | 9 | 69.2 | 28 | 73.7 | 0.729 |
Tumors | 2 | 15.4 | 6 | 15.9 | ||
Stricture | 0 | 0.0 | 2 | 5.2 | ||
Congenital anomaly | 2 | 15.4 | 2 | 5.2 | ||
Mean CT Hounsfield unit of fluid of the obstructed kidney | 16.0 | 5.2 | 1.7 | 5.5 | 0.0001 | |
A-P diameter | 28.45 | 10.1 | 31.13 | 14.4 | 0.535 | |
Renal pelvic area | 628.51 | 433.1 | 745.14 | 470.6 | 0.435 | |